METHOD FOR PRODUCING POWDERY COPOLYMER AND THE SAME COPOLYMER, AND POLYMERIC EMULSIFIER
PROBLEM TO BE SOLVED: To solve problems in a production method for a powdery copolymer of carboxylic acids with a (meth)acrylate having a long-chain alkyl group and to obtain the powdery copolymer excellent in performances. SOLUTION: Copolymerization of a 3-6C unsaturated carboxylic acid or its salt...
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| creator | AIMIYA RYOICHI SHIBATA MAYUKO |
| description | PROBLEM TO BE SOLVED: To solve problems in a production method for a powdery copolymer of carboxylic acids with a (meth)acrylate having a long-chain alkyl group and to obtain the powdery copolymer excellent in performances. SOLUTION: Copolymerization of a 3-6C unsaturated carboxylic acid or its salt with a (meth)acrylic acid alkyl ester having an 8-30C alkyl group is carried out so that |
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SOLUTION: Copolymerization of a 3-6C unsaturated carboxylic acid or its salt with a (meth)acrylic acid alkyl ester having an 8-30C alkyl group is carried out so that <1/4 (in terms of mass) of the (meth)acrylic acid alkyl ester is added to a polymerization system using a water-soluble organic solvent as a polymerization medium when the polymerization is started and residual ≥3/4 of the (meth)acrylic acid alkyl ester is added to the polymerization system after starting polymerization, and then, an alkali is added to the polymerization system and the resultant copolymer is deposited as powder to provide the powdery copolymer excellent as a polymeric emulsifier. 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SOLUTION: Copolymerization of a 3-6C unsaturated carboxylic acid or its salt with a (meth)acrylic acid alkyl ester having an 8-30C alkyl group is carried out so that <1/4 (in terms of mass) of the (meth)acrylic acid alkyl ester is added to a polymerization system using a water-soluble organic solvent as a polymerization medium when the polymerization is started and residual ≥3/4 of the (meth)acrylic acid alkyl ester is added to the polymerization system after starting polymerization, and then, an alkali is added to the polymerization system and the resultant copolymer is deposited as powder to provide the powdery copolymer excellent as a polymeric emulsifier. COPYRIGHT: (C)2006,JPO&NCIPI</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ADHESIVES CHEMISTRY COMPOSITIONS BASED THEREON DYES MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP |
| title | METHOD FOR PRODUCING POWDERY COPOLYMER AND THE SAME COPOLYMER, AND POLYMERIC EMULSIFIER |
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